a:6:{i:0;s:7:"role_id";i:1;s:9:"role_name";i:2;s:10:"role_level";i:3;s:11:"menu_id_str";s:3:"_pk";s:7:"role_id";s:5:"_type";a:4:{s:7:"role_id";s:20:"smallint(4) unsigned";s:9:"role_name";s:12:"varchar(100)";s:10:"role_level";s:19:"tinyint(2) unsigned";s:11:"menu_id_str";s:10:"mediumtext";}}